Răspuns:
Explicație pas cu pas:
Prima zi 1/4
A rams 3/4
A doua zi 2/3 * 3/4 + 5 km = 2/4 + 5 km = 1/2 + 5 km
Total parcurs 1/4 + 1/2 + 5 km = 1/4 + 2/4 + 5 km = 3/4 + 5 km
A ramas 1/4 - 5 km = 30 km
1/4 = 35 + 5 = 35 km
Drumul are 4/4 adica 35 * 4 = 140 km